//-----------------------------------------------------------------------
void UnifiedHighLevelGpuProgram::chooseDelegate() const
{
OGRE_LOCK_AUTO_MUTEX;
mChosenDelegate.setNull();
HighLevelGpuProgramPtr tmpDelegate;
tmpDelegate.setNull();
int tmpPriority = -1;
for (StringVector::const_iterator i = mDelegateNames.begin(); i != mDelegateNames.end(); ++i)
{
HighLevelGpuProgramPtr deleg = HighLevelGpuProgramManager::getSingleton().getByName(*i, mGroup);
//recheck with auto resource group
if (deleg.isNull())
deleg = HighLevelGpuProgramManager::getSingleton().getByName(*i);
// Silently ignore missing links
if(!deleg.isNull() && deleg->isSupported())
{
int priority = getPriority(deleg->getLanguage());
//Find the delegate with the highest prioriry
if (priority >= tmpPriority)
{
tmpDelegate = deleg;
tmpPriority = priority;
}
}
}
mChosenDelegate = tmpDelegate;
}
//-----------------------------------------------------------------------
void UnifiedHighLevelGpuProgram::chooseDelegate() const
{
OGRE_LOCK_AUTO_MUTEX;
mChosenDelegate.setNull();
for (StringVector::const_iterator i = mDelegateNames.begin();
i != mDelegateNames.end(); ++i)
{
HighLevelGpuProgramPtr deleg =
HighLevelGpuProgramManager::getSingleton().getByName(*i);
// Silently ignore missing links
if(!deleg.isNull()
&& deleg->isSupported())
{
mChosenDelegate = deleg;
break;
}
}
}
void BatchPage::_updateShaders()
{
if (!shadersSupported)
return;
uint32 i = 0;
BatchedGeometry::SubBatchIterator it = batch->getSubBatchIterator();
while (it.hasMoreElements()){
BatchedGeometry::SubBatch *subBatch = it.getNext();
MaterialPtr mat = unfadedMaterials[i++];
//Check if lighting should be enabled
bool lightingEnabled = false;
for (unsigned short t = 0; t < mat->getNumTechniques(); ++t){
Technique *tech = mat->getTechnique(t);
for (unsigned short p = 0; p < tech->getNumPasses(); ++p){
Pass *pass = tech->getPass(p);
if (pass->getLightingEnabled()) {
lightingEnabled = true;
break;
}
}
if (lightingEnabled)
break;
}
//Compile the CG shader script based on various material / fade options
StringUtil::StrStreamType tmpName;
tmpName << "BatchPage_";
if (fadeEnabled)
tmpName << "fade_";
if (lightingEnabled)
tmpName << "lit_";
if (subBatch->vertexData->vertexDeclaration->findElementBySemantic(VES_DIFFUSE) != NULL)
tmpName << "clr_";
for (unsigned short i = 0; i < subBatch->vertexData->vertexDeclaration->getElementCount(); ++i)
{
const VertexElement *el = subBatch->vertexData->vertexDeclaration->getElement(i);
if (el->getSemantic() == VES_TEXTURE_COORDINATES) {
String uvType = "";
switch (el->getType()) {
case VET_FLOAT1: uvType = "1"; break;
case VET_FLOAT2: uvType = "2"; break;
case VET_FLOAT3: uvType = "3"; break;
case VET_FLOAT4: uvType = "4"; break;
}
tmpName << uvType << '_';
}
}
tmpName << "vp";
const String vertexProgName = tmpName.str();
String shaderLanguage = ShaderHelper::getShaderLanguage();
//If the shader hasn't been created yet, create it
if (HighLevelGpuProgramManager::getSingleton().getByName(vertexProgName).isNull())
{
Pass *pass = mat->getTechnique(0)->getPass(0);
String vertexProgSource;
if(!shaderLanguage.compare("hlsl") || !shaderLanguage.compare("cg"))
{
vertexProgSource =
"void main( \n"
" float4 iPosition : POSITION, \n"
" float3 normal : NORMAL, \n"
" out float4 oPosition : POSITION, \n";
if (subBatch->vertexData->vertexDeclaration->findElementBySemantic(VES_DIFFUSE) != NULL) vertexProgSource +=
" float4 iColor : COLOR, \n";
unsigned texNum = 0;
for (unsigned short i = 0; i < subBatch->vertexData->vertexDeclaration->getElementCount(); ++i) {
const VertexElement *el = subBatch->vertexData->vertexDeclaration->getElement(i);
if (el->getSemantic() == VES_TEXTURE_COORDINATES) {
String uvType = "";
switch (el->getType()) {
case VET_FLOAT1: uvType = "float"; break;
case VET_FLOAT2: uvType = "float2"; break;
case VET_FLOAT3: uvType = "float3"; break;
case VET_FLOAT4: uvType = "float4"; break;
}
vertexProgSource +=
" " + uvType + " iUV" + StringConverter::toString(texNum) + " : TEXCOORD" + StringConverter::toString(texNum) + ", \n"
" out " + uvType + " oUV" + StringConverter::toString(texNum) + " : TEXCOORD" + StringConverter::toString(texNum) + ", \n";
++texNum;
}
}
vertexProgSource +=
" out float oFog : FOG, \n"
" out float4 oColor : COLOR, \n"
" uniform float4 iFogParams, \n";
if (lightingEnabled) vertexProgSource +=
" uniform float4 objSpaceLight, \n"
" uniform float4 lightDiffuse, \n"
" uniform float4 lightAmbient, \n";
if (fadeEnabled) vertexProgSource +=
" uniform float3 camPos, \n";
vertexProgSource +=
" uniform float4x4 worldViewProj, \n"
" uniform float fadeGap, \n"
" uniform float invisibleDist )\n"
"{ \n";
if (lightingEnabled) {
//Perform lighting calculations (no specular)
vertexProgSource +=
" float3 light = normalize(objSpaceLight.xyz - (iPosition.xyz * objSpaceLight.w)); \n"
" float diffuseFactor = max(dot(normal, light), 0); \n";
if (subBatch->vertexData->vertexDeclaration->findElementBySemantic(VES_DIFFUSE) != NULL)
vertexProgSource += "oColor = (lightAmbient + diffuseFactor * lightDiffuse) * iColor; \n";
else
vertexProgSource += "oColor = (lightAmbient + diffuseFactor * lightDiffuse); \n";
} else {
if (subBatch->vertexData->vertexDeclaration->findElementBySemantic(VES_DIFFUSE) != NULL)
vertexProgSource += "oColor = iColor; \n";
else
vertexProgSource += "oColor = float4(1, 1, 1, 1); \n";
}
if (fadeEnabled) vertexProgSource +=
//Fade out in the distance
" float dist = distance(camPos.xz, iPosition.xz); \n"
" oColor.a *= (invisibleDist - dist) / fadeGap; \n";
texNum = 0;
for (unsigned short i = 0; i < subBatch->vertexData->vertexDeclaration->getElementCount(); ++i) {
const VertexElement *el = subBatch->vertexData->vertexDeclaration->getElement(i);
if (el->getSemantic() == VES_TEXTURE_COORDINATES) {
vertexProgSource +=
" oUV" + StringConverter::toString(texNum) + " = iUV" + StringConverter::toString(texNum) + "; \n";
++texNum;
}
}
vertexProgSource +=
" oPosition = mul(worldViewProj, iPosition); \n";
if (sceneMgr->getFogMode() == Ogre::FOG_EXP2) {
vertexProgSource +=
" oFog = 1 - clamp (pow (2.71828, -oPosition.z * iFogParams.x), 0, 1); \n";
} else {
vertexProgSource +=
" oFog = oPosition.z; \n";
}
vertexProgSource += "}";
}
if(!shaderLanguage.compare("glsl"))
{
vertexProgSource =
"uniform float fadeGap; \n"
"uniform float invisibleDist; \n";
if (lightingEnabled) vertexProgSource +=
"uniform vec4 objSpaceLight; \n"
"uniform vec4 lightDiffuse; \n"
"uniform vec4 lightAmbient; \n";
if (fadeEnabled) vertexProgSource +=
"uniform vec3 camPos; \n";
vertexProgSource +=
"void main() \n"
"{ \n";
if (lightingEnabled)
{
//Perform lighting calculations (no specular)
vertexProgSource +=
" vec3 light = normalize(objSpaceLight.xyz - (gl_Vertex.xyz * objSpaceLight.w)); \n"
" float diffuseFactor = max(dot(gl_Normal, light), 0.0); \n";
if (subBatch->vertexData->vertexDeclaration->findElementBySemantic(VES_DIFFUSE) != NULL)
{
vertexProgSource += " gl_FrontColor = (lightAmbient + diffuseFactor * lightDiffuse) * gl_Color; \n";
}
else
{
vertexProgSource += " gl_FrontColor = (lightAmbient + diffuseFactor * lightDiffuse); \n";
}
}
else
{
if (subBatch->vertexData->vertexDeclaration->findElementBySemantic(VES_DIFFUSE) != NULL)
{
vertexProgSource += " gl_FrontColor = gl_Color; \n";
}
else
{
vertexProgSource += " gl_FrontColor = vec4(1.0, 1.0, 1.0, 1.0); \n";
}
}
if (fadeEnabled)
{
vertexProgSource +=
//Fade out in the distance
" float dist = distance(camPos.xz, gl_Vertex.xz); \n"
" gl_FrontColor.a *= (invisibleDist - dist) / fadeGap; \n";
}
unsigned texNum = 0;
for (unsigned short i = 0; i < subBatch->vertexData->vertexDeclaration->getElementCount(); ++i)
{
const VertexElement *el = subBatch->vertexData->vertexDeclaration->getElement(i);
if (el->getSemantic() == VES_TEXTURE_COORDINATES)
{
vertexProgSource +=
" gl_TexCoord[" + StringConverter::toString(texNum) + "] = gl_MultiTexCoord" + StringConverter::toString(texNum) + "; \n";
++texNum;
}
}
vertexProgSource +=
" gl_Position = gl_ModelViewProjectionMatrix * gl_Vertex; \n";
if (sceneMgr->getFogMode() == Ogre::FOG_EXP2) {
vertexProgSource +=
" gl_FogFragCoord = clamp(exp(- gl_Fog.density * gl_Fog.density * gl_Position.z * gl_Position.z), 0.0, 1.0); \n";
} else {
vertexProgSource +=
" gl_FogFragCoord = gl_Position.z; \n";
}
vertexProgSource += "}";
}
HighLevelGpuProgramPtr vertexShader = HighLevelGpuProgramManager::getSingleton().createProgram(
vertexProgName,
ResourceGroupManager::DEFAULT_RESOURCE_GROUP_NAME,
shaderLanguage, GPT_VERTEX_PROGRAM);
vertexShader->setSource(vertexProgSource);
if (shaderLanguage == "hlsl")
{
vertexShader->setParameter("target", "vs_1_1");
vertexShader->setParameter("entry_point", "main");
}
else if(shaderLanguage == "cg")
{
vertexShader->setParameter("profiles", "vs_1_1 arbvp1");
vertexShader->setParameter("entry_point", "main");
}
// GLSL can only have one entry point "main".
vertexShader->load();
if (vertexShader->hasCompileError()) {
OGRE_EXCEPT(Exception::ERR_INTERNAL_ERROR, "Error loading the batching vertex shader.", "BatchPage::_updateShaders()");
}
}
std::string fragmentProgramName("BatchFragStandard");
String fragmentProgSource;
//We also need a fragment program to go with our vertex program. Especially on ATI cards on Linux where we can't mix shaders and the fixed function pipeline.
HighLevelGpuProgramPtr fragShader = static_cast<HighLevelGpuProgramPtr>(HighLevelGpuProgramManager::getSingleton().getByName(fragmentProgramName));
if (fragShader.isNull()){
Pass *pass = mat->getTechnique(0)->getPass(0);
if (shaderLanguage == "glsl") {
fragmentProgSource = "uniform sampler2D diffuseMap;\n"
"void main() {"
" gl_FragColor = texture2D(diffuseMap, gl_TexCoord[0].st);"
" gl_FragColor.rgb = mix(gl_Fog.color, (gl_LightModel.ambient * gl_FragColor + gl_FragColor), gl_FogFragCoord).rgb;"
"}";
} else {
fragmentProgSource = "void main \n"
"( \n"
" float2 iTexcoord : TEXCOORD0, \n"
" float iFog : FOG, \n"
" out float4 oColour : COLOR, \n"
" uniform sampler2D diffuseTexture : TEXUNIT0, \n"
" uniform float3 iFogColour \n"
") \n"
"{ \n"
" oColour = tex2D(diffuseTexture, iTexcoord.xy); \n"
" oColour.xyz = lerp(oColour.xyz, iFogColour, iFog);\n"
"}";
}
fragShader = HighLevelGpuProgramManager::getSingleton().createProgram(
fragmentProgramName,
ResourceGroupManager::DEFAULT_RESOURCE_GROUP_NAME,
shaderLanguage, GPT_FRAGMENT_PROGRAM);
fragShader->setSource(fragmentProgSource);
if (shaderLanguage == "hlsl") {
fragShader->setParameter("entry_point", "main");
fragShader->setParameter("target", "ps_2_0");
} else if (shaderLanguage == "cg") {
fragShader->setParameter("profiles", "ps_2_0 arbfp1");
fragShader->setParameter("entry_point", "main");
}
fragShader->load();
if (fragShader->hasCompileError()) {
OGRE_EXCEPT(Exception::ERR_INTERNAL_ERROR, "Error loading the batching fragment shader.", "BatchPage::_updateShaders()");
}
}
//Now that the shader is ready to be applied, apply it
StringUtil::StrStreamType materialSignature;
materialSignature << "BatchMat|";
materialSignature << mat->getName() << "|";
if (fadeEnabled){
materialSignature << visibleDist << "|";
materialSignature << invisibleDist << "|";
}
//Search for the desired material
MaterialPtr generatedMaterial = MaterialManager::getSingleton().getByName(materialSignature.str());
if (generatedMaterial.isNull()){
//Clone the material
generatedMaterial = mat->clone(materialSignature.str());
//And apply the fade shader
Ogre::Material::TechniqueIterator I = generatedMaterial->getSupportedTechniqueIterator();
while (I.hasMoreElements()) {
Technique *tech = I.getNext();
for (unsigned short p = 0; p < tech->getNumPasses(); ++p){
Pass *pass = tech->getPass(p);
//Setup vertex program
if (pass->getVertexProgramName() == "")
pass->setVertexProgram(vertexProgName);
if (pass->getFragmentProgramName() == "" && fragShader->isSupported())
pass->setFragmentProgram(fragmentProgramName);
try{
GpuProgramParametersSharedPtr params = pass->getVertexProgramParameters();
params->setIgnoreMissingParams(true);
if (lightingEnabled) {
params->setNamedAutoConstant("objSpaceLight", GpuProgramParameters::ACT_LIGHT_POSITION_OBJECT_SPACE);
params->setNamedAutoConstant("lightDiffuse", GpuProgramParameters::ACT_DERIVED_LIGHT_DIFFUSE_COLOUR);
params->setNamedAutoConstant("lightAmbient", GpuProgramParameters::ACT_DERIVED_AMBIENT_LIGHT_COLOUR);
//params->setNamedAutoConstant("matAmbient", GpuProgramParameters::ACT_SURFACE_AMBIENT_COLOUR);
}
if (shaderLanguage.compare("glsl") == 0) {
//glsl can use the built in gl_ModelViewProjectionMatrix
params->setNamedAutoConstant("worldViewProj", GpuProgramParameters::ACT_WORLDVIEWPROJ_MATRIX);
} else {
params->setNamedAutoConstant("iFogParams", GpuProgramParameters::ACT_FOG_PARAMS);
}
if (fadeEnabled)
{
params->setNamedAutoConstant("camPos", GpuProgramParameters::ACT_CAMERA_POSITION_OBJECT_SPACE);
//Set fade ranges
params->setNamedAutoConstant("invisibleDist", GpuProgramParameters::ACT_CUSTOM);
params->setNamedConstant("invisibleDist", invisibleDist);
params->setNamedAutoConstant("fadeGap", GpuProgramParameters::ACT_CUSTOM);
params->setNamedConstant("fadeGap", invisibleDist - visibleDist);
if (pass->getAlphaRejectFunction() == CMPF_ALWAYS_PASS)
pass->setSceneBlending(SBT_TRANSPARENT_ALPHA);
}
if (pass->hasFragmentProgram()) {
params = pass->getFragmentProgramParameters();
params->setIgnoreMissingParams(true);
params->setNamedAutoConstant("iFogColour", GpuProgramParameters::ACT_FOG_COLOUR);
}
}
catch (...) {
OGRE_EXCEPT(Exception::ERR_INTERNAL_ERROR, "Error configuring batched geometry transitions. If you're using materials with custom vertex shaders, they will need to implement fade transitions to be compatible with BatchPage.", "BatchPage::_updateShaders()");
}
}
}
}
//Apply the material
subBatch->setMaterial(generatedMaterial);
}
}
